US5044227A - Vehicle transmissions equipped with electric retarders - Google Patents

Vehicle transmissions equipped with electric retarders Download PDF

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Publication number
US5044227A
US5044227A US07/543,471 US54347190A US5044227A US 5044227 A US5044227 A US 5044227A US 54347190 A US54347190 A US 54347190A US 5044227 A US5044227 A US 5044227A
Authority
US
United States
Prior art keywords
flange
cardan
gearbox
insert
bearings
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
US07/543,471
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English (en)
Inventor
Guy Rugraff
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Labavia SGE SARL
Original Assignee
Labavia SGE SARL
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Labavia SGE SARL filed Critical Labavia SGE SARL
Assigned to LABAVIA-S.G.E. reassignment LABAVIA-S.G.E. ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: RUGRAFF, GUY
Application granted granted Critical
Publication of US5044227A publication Critical patent/US5044227A/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K17/00—Arrangement or mounting of transmissions in vehicles
    • B60K17/04—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K49/00—Dynamo-electric clutches; Dynamo-electric brakes
    • H02K49/02—Dynamo-electric clutches; Dynamo-electric brakes of the asynchronous induction type
    • H02K49/04—Dynamo-electric clutches; Dynamo-electric brakes of the asynchronous induction type of the eddy-current hysteresis type
    • H02K49/046—Dynamo-electric clutches; Dynamo-electric brakes of the asynchronous induction type of the eddy-current hysteresis type with an axial airgap
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K17/00—Arrangement or mounting of transmissions in vehicles
    • B60K17/22—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or type of main drive shafting, e.g. cardan shaft
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
    • B60T13/74—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive
    • B60T13/748—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive acting on electro-magnetic brakes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D3/00—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive
    • F16D3/16—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts
    • F16D3/26—Hooke's joints or other joints with an equivalent intermediate member to which each coupling part is pivotally or slidably connected
    • F16D3/38—Hooke's joints or other joints with an equivalent intermediate member to which each coupling part is pivotally or slidably connected with a single intermediate member with trunnions or bearings arranged on two axes perpendicular to one another
    • F16D3/40—Hooke's joints or other joints with an equivalent intermediate member to which each coupling part is pivotally or slidably connected with a single intermediate member with trunnions or bearings arranged on two axes perpendicular to one another with intermediate member provided with two pairs of outwardly-directed trunnions on intersecting axes
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/21—Elements
    • Y10T74/2186—Gear casings

Definitions

  • the invention relates to vehicle transmissions, i.e. the series of members transmitting the rotational movement of the engine to the wheels of the vehicle, which members comprise a gear-box, a rear axle and a double cardan shaft for transferring the torque from the gear-box to the rear axle while allowing relative transverse movements thereof.
  • vehicle transmissions i.e. the series of members transmitting the rotational movement of the engine to the wheels of the vehicle, which members comprise a gear-box, a rear axle and a double cardan shaft for transferring the torque from the gear-box to the rear axle while allowing relative transverse movements thereof.
  • retarder comprising on the one hand an annular inductor stator cantilevered on the casing of the gearbox of the vehicle by means of an appropriate frame and on the other hand a rotor comprising two induced ferromagnetic material discs which surround the stator and are both supported by a part itself cantilevered on a stub shaft inside the casing, each disc being fixed for this purpose, by means of a crown of arms forming ventilation fins, to a ring which is in its turn fixed to said part.
  • the part on which the two rings are mounted is generally a special insert plate which is fixed both to a "gear-box flange" fixed on a stub shaft inside the casing of the gearbox and, on the axial side opposite said stub shaft, to an end flange of the contiguous cardan joint.
  • the special insert plate must have a certain thickness since it must be able to transmit the whole of the drive torque of the vehicle from the cardan to the gear-box flange.
  • the last drawback may be serious in the case of very short transmissions, i.e. in which a limited space is available between the output of the gear-box and the input of the rear axle.
  • Such a construction is interesting, in particular because the insert, only transmitting retarding torques and not drive torques may be formed by a very light part, comprising essentially a tube section reinforced with internal radial ribs.
  • the present invention proposes a solution which makes it possible to shorten the transmission more than in the preceding solution and which is applicable even to retarders in which the diameter of the central opening is relatively small, as is the case for most of the retarders of the kind considered which exist at present.
  • the transmissions of the kind in question according to the invention are essentially characterized in that they comprise successively, between the gearbox flange and the nearest journal cross of cardan joint, first of all a tubular insert fixed to the periphery of said gearbox flange on the side opposite the gearbox and then, fixed to said insert, a cardan flange which is "reversed” with respect to the usual flanges, namely disposed on the same side as the shaft of the cardan joint with respect to the centre of the corresponding journal cross and itself formed for this purpose as an annulus surrounding this shaft, the assembly of the "reversed" flange on the insert being made at the level of two external collars forming part respectively of these two parts, which collars are applied axially against each other and form together an annulus on which the two rotor rings of the retarder are fixed axially on each side.
  • the centre of the journal cross may be disposed very close to the face on which the gearbox flange is mounted, even for a relatively small diameter of the rotor rings.
  • the inner edge of the external collar comprised by the "reversed" flange is connected to a tubular skirt extending on the side opposite the gearbox,
  • the "reversed" flange comprises two lugs projecting axially from this flange on the same side as the gearbox and formed with two coaxial bearings whose common axis is perpendicular to that of said flange, which bearings are adapted for receiving two journals of the journal cross concerned, and the zone of revolution corresponding to the connection of the collar and of the skirt is formed with two radial recesses offset angularly by 90° with respect to the bearings about the axis of the flange, which recesses have bottoms defined by zones of revolution about the axis of said bearings,
  • the tubular insert is formed inwardly with two radial recesses offset angularly by 90° with respect to the bearings of the "reversed" flange, which recesses have bottoms defined by zones of revolution about the axis of these bearings,
  • the means for fixing this insert against the gearbox flange are bolts or pins cooperating with bores which are all assembled together in the two portions of the insert situated angularly between its recesses,
  • the gearbox flange is formed with cavities adapted for receiving the fork, of the cardan joint concerned, which is movable with respect to this flange.
  • the invention comprises certain other arrangements which are preferably used at the same time and which will be more explicitly discussed hereafter.
  • FIG. 1 of these drawings shows in axial section a part of a vehicle transmission, which part is equipped with an electric retarder in accordance with the invention.
  • the portions shown in section of parts 14, 26 and 23 at the bottom, visible in FIG. 1 correspond to axial planes other than the median vertical axial plane of the transmission, which planes pass respectively through the axes of bores 28, 29 and 39 of FIG. 2, this representation having been adopted so as to show a stud-bolt 3O, a hard pin P and a hard pin 40).
  • FIG. 2 and 3 show on a larger scale, respectively in an end view in the direction of arrow II of FIG. 2 and in axial section through III-III of FIG. 2, a tubular insert forming part of the above transmission, which insert is formed in accordance with the invention.
  • FIGS. 4 and 5 show on the same scale as FIGS. 2 and 3, respectively in axial section through IV-IV of FIG. 5 and in an end view in the direction of arrow V of FIG. 4, a "reversed" flange forming part of the above transmission, which flange is formed in accordance with the invention.
  • the electric retarder considered is of the type known under the trademark "FOCAL" mounted with a horizontal or substantially horizontal axis, cantilevered on the output of a gearbox casing 1.
  • This retarder comprises an inductor stator 2 and an induced rotor 3.
  • Stator 2 comprises a substantially annular flange 4 which carries a ring of coils 5, even in number, arranged so as to form by their ends two annular successions of flat magnetic poles with polarities alternating from one to the next.
  • Flange 4 is mounted on the gearbox casing 1--or more precisely on an intermediate mount 6 itself fixed against the flat front face of said casing 1--by a structure 7 in the form of a star or an apertured bell and with tubular spacers 8.
  • Rotor 3 comprises two ferromagnetic material discs 9a and 9b 9 adapted for surrounding the stator axially and each travelling past a succession of poles of this stator from which they are separated by a small clearance or airgap e.
  • Each disc 9a and 9b is connected to a corresponding fixing ring 10a and 10b by a crown of curved arms 11a and 11b forming ventilation fins and the two rings 10a and 10b are bolted by means of bolt-nut systems 12a and 12b to an intermediate annulus 13 to which reference will be made further on.
  • the central portion of the gearbox mount 6 has the form of a cylindrical nose 17 carrying, via an end bearing 18, a sleeve 19 whose external axial end is extended radially by flange 14, called in the present text "gearbox flange".
  • sleeve 19 is splined inwardly at 20 and is force fitted on the end piece 21 of the gearbox, splined externally at 22.
  • the axial lengths of nose 17 and of sleeve 19 are relatively small and flange 14 extends close to the axial end of said nose 17.
  • this insert plate which is particularly heavy and cumbersome is omitted, the whole of said plate and the end flange of the usual cardan joint being replaced by the assembly of a tubular insert 23 and a "reversed" flange 24.
  • the tubular insert 23 comprises a cylindrical sleeve 25 connected at one of its ends to an internal collar 26 and at its other end to an external collar 27.
  • the internal collar 26 is pierced with cylindrical bores 28, 29 (FIG. 2) adapted to cooperate respectively with threaded stud bolts 30 (FIG. 1) anchored in the periphery of the gearbox flange 14 and with smooth and hard pins P.
  • the bores in question eight in number for the first ones 28 and two for the others 29, are grouped together in two diametrically opposite arcs of circles and each extending substantially over 120°, each arc comprising two pairs of bores 28 surrounding a bore 29.
  • Ribs N advantageously with a triangular shape as shown in FIG. 1, are provided between the two bores 28 of each pair.
  • the tubular insert 23 comprises two recesses 31 adapted to receive with play the fork 32, of the cardan joint 15, which is movable with respect to said insert.
  • the cardan joint 15 in question in fact comprises, in a way known per se, between its fixing flange--which is here the "reversed" flange 24--and the shaft section 16, on the one hand, a journal cross 33 carrying four journals 34 and 35 and, on the other hand, two forks each adapted for pivotally receiving two journals of the journal cross in two coaxial bearings, these two forks 36, 32 being fast respectively with flange 24 and the shaft section 16.
  • the bottoms of recesses 31 are defined by zones of revolution about the axis A common to the two journals 34 carried by fork 36.
  • collar 26 The largest diameter portion of collar 26 is extended on gearbox 1 side by an annular heel 37 adapted to jointingly cover the gearbox flange 14 for relative centering purposes.
  • Apertures 38 are formed radially in the cylindrical sleeve 25 for ventilation purposes.
  • the external collar 27 forms a part of the above annulus 13.
  • cylindrical holes 39 (FIGS. 2 and 3), particularly four in number, for receiving hard pins 40 for angular coupling with flange 24,
  • shouldered holes 41 particularly four in number, adapted to be traversed by the bolt-nut systems 12 for mounting the rotor crowns and serving as seats prohibiting rotation for non circular "heads" or steps 42 included in said systems.
  • the first one is formed with through-holes 46 through which the bolt-nut systems 12 pass and with blind holes 47 in which the hard pins 40 are force fitted.
  • Holes 46 are advantageously four in number and the same goes for holes 47, these different holes being distributed evenly all round the collar concerned 43.
  • the "reversed" flange 24 comprises, like the tubular insert 23, two radial recesses 48 formed in the connection zone between collar 43 and the cylindrical skirt 45, which recesses have bottoms intended to axially extend those of recesses 31 of the tubular insert, said bottoms being again of revolution about the axis A of the two journals 34.
  • Each of the two annular parts 23 and 24 must of course be sufficiently strong mechanically to be able to transfer drive torques between the double cardan shaft 16 and the gearbox flange 14.
  • pins P and 40 which assume the essential part of the transfer of torque between the different parts coupled together are made from a very resistant material such as hard steel.
  • the bolt-nut systems 12 usually provided for fixing the two rotor rings 10 on annulus 13 which are here further used for assembling the two parts 23 and 24 one against the other; it is true that in addition pins 40 are provided for transferring the torque between these two parts, but no additional screw system is required for their mutual assembly, and it may in short be considered that the proposed construction comprises for example less screwing members than the one mentioned above in which the rotor rings are fixed to a tubular insert itself fixed to the enlarged periphery of the gearbox flange and in which the cardan joint comprises a normal end flange fixed directly to said gearbox flange.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Transportation (AREA)
  • General Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Chemical & Material Sciences (AREA)
  • Power Engineering (AREA)
  • Dynamo-Electric Clutches, Dynamo-Electric Brakes (AREA)
  • Gear-Shifting Mechanisms (AREA)
  • Braking Arrangements (AREA)
  • Friction Gearing (AREA)
  • Motor Power Transmission Devices (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)
  • General Details Of Gearings (AREA)
US07/543,471 1989-06-30 1990-06-26 Vehicle transmissions equipped with electric retarders Expired - Fee Related US5044227A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8908794A FR2649049B1 (fr) 1989-06-30 1989-06-30 Perfectionnements aux transmissions de vehicules equipees de ralentisseurs electriques
FR8908794 1989-06-30

Publications (1)

Publication Number Publication Date
US5044227A true US5044227A (en) 1991-09-03

Family

ID=9383325

Family Applications (1)

Application Number Title Priority Date Filing Date
US07/543,471 Expired - Fee Related US5044227A (en) 1989-06-30 1990-06-26 Vehicle transmissions equipped with electric retarders

Country Status (10)

Country Link
US (1) US5044227A (de)
EP (1) EP0406110B1 (de)
JP (1) JPH0367726A (de)
KR (1) KR910000410A (de)
AT (1) ATE86928T1 (de)
CA (1) CA2020071C (de)
DE (1) DE69001100T2 (de)
ES (1) ES2038869T3 (de)
FR (1) FR2649049B1 (de)
PT (1) PT94563B (de)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5203441A (en) * 1992-06-01 1993-04-20 Eaton Corporation Adaptor for use in a flywheel and transmission assembly
US5513729A (en) * 1994-06-08 1996-05-07 Labavia Sge Vehicle transmissions equipped with eddy current retarders, and in fastener members for such transmissions
US5855264A (en) * 1996-02-12 1999-01-05 Labavia Sge Vehicle transmission system fitted with an electrical retarder
US5868626A (en) * 1997-04-30 1999-02-09 Dana Corporation Universal joint yoke having axially-extending grooves
US20040026191A1 (en) * 2000-11-27 2004-02-12 Lothar Kloft Retarder, particularly provided as a braking device or auxiliary braking device for vehicles or the like, especially rail vehicles

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56148170A (en) * 1980-04-19 1981-11-17 Sanyo Electric Co Ltd Damping device of eddycurrent system
US4398111A (en) * 1982-03-11 1983-08-09 Baylor Company Eddy current brake
US4529392A (en) * 1982-03-11 1985-07-16 J. M. Voith Gmbh Universal joint shaft with aligning apparatus
US4591349A (en) * 1983-06-15 1986-05-27 Steyr-Daimler-Puch Aktiengesellschaft Cardan shaft drive for a transmission, particularly for the distribution transmission of a motor vehicle with all-wheel drive
US4683392A (en) * 1982-04-26 1987-07-28 Magnetek, Inc. Eddy current coupling having stepped rotor and coil support
US4791330A (en) * 1987-02-16 1988-12-13 Labavia-S.G.E. Eddy current retarders for vehicles
US4853573A (en) * 1988-07-29 1989-08-01 Eaton Corporation Eddy current brake assembly
US4876471A (en) * 1986-11-25 1989-10-24 L'enrouleur Electrique Moderne Magnetic drive coupler with constant torque independent of output slippage
US4880405A (en) * 1986-12-09 1989-11-14 Gelenkwellenbau Gmbh Universal joint of the cardan type
US4946422A (en) * 1983-04-20 1990-08-07 J. M. Voith Gmbh Universal joint for a drive shaft

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1003651A (fr) * 1947-02-06 1952-03-20 Perfectionnements apportés aux moyens pour l'entraînement de roues motrices déplaçables angulairement, notamment des roues motrices et directrices de véhicules automobiles
FR1254364A (fr) * 1960-04-19 1961-02-17 Motor Gear & Engineering Compa Perfectionnements apportés aux joints universels
FR2247846B1 (de) * 1973-10-15 1980-05-09 Labavia
ES453792A1 (es) * 1976-11-30 1977-11-01 Lafuente Ruberte Antonio Perfeccionamientos introducidos en la construccion de ralen-tizadores para vehiculos.

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56148170A (en) * 1980-04-19 1981-11-17 Sanyo Electric Co Ltd Damping device of eddycurrent system
US4398111A (en) * 1982-03-11 1983-08-09 Baylor Company Eddy current brake
US4529392A (en) * 1982-03-11 1985-07-16 J. M. Voith Gmbh Universal joint shaft with aligning apparatus
US4683392A (en) * 1982-04-26 1987-07-28 Magnetek, Inc. Eddy current coupling having stepped rotor and coil support
US4946422A (en) * 1983-04-20 1990-08-07 J. M. Voith Gmbh Universal joint for a drive shaft
US4591349A (en) * 1983-06-15 1986-05-27 Steyr-Daimler-Puch Aktiengesellschaft Cardan shaft drive for a transmission, particularly for the distribution transmission of a motor vehicle with all-wheel drive
US4876471A (en) * 1986-11-25 1989-10-24 L'enrouleur Electrique Moderne Magnetic drive coupler with constant torque independent of output slippage
US4880405A (en) * 1986-12-09 1989-11-14 Gelenkwellenbau Gmbh Universal joint of the cardan type
US4791330A (en) * 1987-02-16 1988-12-13 Labavia-S.G.E. Eddy current retarders for vehicles
US4853573A (en) * 1988-07-29 1989-08-01 Eaton Corporation Eddy current brake assembly

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5203441A (en) * 1992-06-01 1993-04-20 Eaton Corporation Adaptor for use in a flywheel and transmission assembly
US5513729A (en) * 1994-06-08 1996-05-07 Labavia Sge Vehicle transmissions equipped with eddy current retarders, and in fastener members for such transmissions
US5855264A (en) * 1996-02-12 1999-01-05 Labavia Sge Vehicle transmission system fitted with an electrical retarder
US5868626A (en) * 1997-04-30 1999-02-09 Dana Corporation Universal joint yoke having axially-extending grooves
US20040026191A1 (en) * 2000-11-27 2004-02-12 Lothar Kloft Retarder, particularly provided as a braking device or auxiliary braking device for vehicles or the like, especially rail vehicles
US7178644B2 (en) * 2000-11-27 2007-02-20 Lothar Kloft Retarder, particularly provided as a braking device or auxiliary braking device for vehicles or the like, especially rail vehicles

Also Published As

Publication number Publication date
EP0406110A1 (de) 1991-01-02
ES2038869T3 (es) 1993-08-01
FR2649049A1 (fr) 1991-01-04
PT94563B (pt) 1997-04-30
KR910000410A (ko) 1991-01-29
DE69001100T2 (de) 1993-08-26
CA2020071A1 (en) 1990-12-31
FR2649049B1 (fr) 1991-10-18
PT94563A (pt) 1992-05-29
JPH0367726A (ja) 1991-03-22
CA2020071C (en) 1995-06-20
EP0406110B1 (de) 1993-03-17
DE69001100D1 (de) 1993-04-22
ATE86928T1 (de) 1993-04-15

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Effective date: 19990903

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